Power inverter



FIG. 1 is a top plan view of a power inverter showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof, and;

FIG. 7 is a top, rear and right side perspective view thereof. 

The ornamental design for a power inverter, as shown. 